var label = tick.label;
var lineWidth, lineColor, borderDash, borderDashOffset;
- if (index === (typeof me.zeroLineIndex !== 'undefined' ? me.zeroLineIndex : 0) && (options.offset === gridLines.offsetGridLines)) {
+ if (index === me.zeroLineIndex && options.offset === gridLines.offsetGridLines) {
// Draw the first index specially
lineWidth = gridLines.zeroLineWidth;
lineColor = gridLines.zeroLineColor;